2014/01/01 by Chintamani Pai, M. Shalini, S. Radha · 1 citation
Engineering · Environmental Science · #Beam (structure) #Characterization and Applications of Magnetic Nanoparticles #Diffraction #Ferrofluid #Gaussian beam #Laser #Magnetic field #Materials science #Optical Polarization and Ellipsometry #Optics #Optoelectronics #Physics #Plant Water Relations and Carbon Dynamics #Refractive index #Viscosity
paper · doi:10.1016/j.proeng.2013.09.250
openalex publication_date 2014/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
Abstract In this paper, we report the experimental observation of diffraction patterns in a ferrofluid comprising of Fe 3 O 4 nanoparticles in hexane by a 10 mW He-Ne laser beam. An external dc magnetic field (∼1.7 kG) was applied perpendicular to the beam. Transient phenomenon in diffraction patterns is studied with and without magnetic field. Diffraction patterns showed a variation in both zero and applied magnetic field. This provides some information of non-linear optical properties and magneto-optical effects. Laser beam passed through a sample establishes refractive index gradient modifying the original Gaussian beam of the laser. Analysis of transient diffraction patterns can be used to study the parameters of ferrofluid like viscosity and thermal conductivity. This gives a new insight to understand the dynamics of the magnetic fluid and its potential use for the development of ferrofluid based sensors.